html, body {
    background: #eee;
    font-family: Tahoma, "Microsoft YaHei", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0;
    height: 100%;
}

.button {
    margin: 5px 5px 0 10px;
    border-radius: 5px;
    /*padding: 10px 20px 10px 20px;*/
    border: solid black 1px;
    /*color: #fff;*/
    text-decoration: none;
    display: inline-block;
    /*min-width: 30px;*/
    text-align: center;
    width: 100px;
    height: 30px;
}


.button-text {
    vertical-align: -webkit-baseline-middle;
}